Potentiostatic polarization studies in fused carbonates—I. The noble metals, silver and nickel

Janz, George J.; Conte, A.

doi:10.1016/0013-4686(64)87003-1

Cited by 46 publications

(16 citation statements)

References 6 publications

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“…Briggs (2) showed that only a monomolecular layer of hydrogen or oxygen on the indicator electrode sufficed to disturb the metastable equilibrium and cause the column to drop. It is well known that liquids possess considerable tensile strength.…”

Section: Corrosion Of Ag In ]Uel Cells--when Silver Metal Ismentioning

confidence: 99%

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Electrochemical Studies in Molten Li[sub 2]CO[sub 3]-Na[sub 2]CO[sub 3]

Bartlett

Johnson

1967

J. Electrochem. Soc.

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It has been confirmed that C and O 2-are the cathode products and CO2 and 02 the anode products of electrolyzing Li2CO3-Na2CO3 at 550~In the presence of oxide, CO32-is oxidized at platinum to CO2 -~ 1/202 by a 6-electron process involving the substrate metal. Ag+/Ag is a satisfactory reference electrode for the concentration range 4 x 10 -3 to 4 x 10-2M Ag +. Formal potentials of other systems on a molal scale are: Co2+/Co --0.946v, Ni2+/Ni ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP

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Section: Corrosion Of Ag In ]Uel Cells--when Silver Metal Ismentioning

confidence: 99%

“…The electrolytic reduction product of molten carbonates at temperatures below 600~ has been identified qualitatively as carbon (1)(2)(3)(4), and the reduction product at 700~ is thought to be carbon monoxide (2).…”

mentioning

confidence: 99%

Electrochemical Studies in Molten Li[sub 2]CO[sub 3]-Na[sub 2]CO[sub 3]

Bartlett

Johnson

1967

J. Electrochem. Soc.

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“…Carbon deposition was reported on a Ni electrode. 12,17,26,29,34,37,38 Reduction peaks on CVs at À2.0 and À2.4 V vs. Ag in eutectic Li 2 CO 3 -Na 2 CO 3 -K 2 CO 3 at 450 C were attributed to the reduction of CO 3 2À ions to carbon and the deposition of alkali metal respectively. The two oxidation peaks observed were assigned to the electrochemical dissolution of the deposited alkali metals and carbon.…”

Section: Voltammetric Studies On Different Working Electrodesmentioning

confidence: 98%

“…The intermediate peaks on the CVs were assigned to presence of nickel oxide. 30 Carbon was also deposited on W, 11 Ag, 38 Mo, 36 Al, 10 Cu 16,30 and glassy carbon 26,30 electrodes.…”

Section: Voltammetric Studies On Different Working Electrodesmentioning

confidence: 99%

Carbon electrodeposition in molten salts: electrode reactions and applications

2014

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The chemistry of carbon deposition in molten salts has been studied by a number of researchers with quite different interpretations of the reactions involved. This paper therefore reviews and discusses available literature on the cathodic and anodic reaction mechanisms of carbon electrodeposition in molten carbonate salts, particularly considering new voltammetric studies. The effects of process variables (e.g. salt composition, temperature, voltage, electrode material etc.) on the electrochemical process are also addressed. Description of the properties of the deposited carbon and how these properties transfer to potential applications in energy storage and electricity production (carbon re-oxidation) are discussed.

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“…The translation of this type of study to electrodes for use in fuel cell systems based upon phosphoric acid and molten alkali metal carbonate electrolytes is important (1, 2, 12) but has been difficult, experimentally, because of the higher temperatures and concomitant material problems. The results demonstrated the effect of immersion depth on the magnitude of the observed currents but the substrates chosen, particularly for the oxygen reduction reaction, havebeen shown to be oxidized at the potentials involved in the studies (16). The results demonstrated the effect of immersion depth on the magnitude of the observed currents but the substrates chosen, particularly for the oxygen reduction reaction, havebeen shown to be oxidized at the potentials involved in the studies (16).…”

mentioning

confidence: 88%

The Formation of Menisci/Films on Gold Electrodes Immersed in Molten Carbonates and Their Effect on Cyclic Voltammetric Measurements

White¹,

Twardoch²

1988

J. Electrochem. Soc.

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The study of redox reactions which involve gaseous reagents is important in the development of fuel cells and gas scrubbing eleetrolyzers. Oxygen electrodes are of particular concern in molten alkali carbonate fuel cells. The reported data for this redox system have generated some divergence of opinion concerning the mechanisms and kinetics particularly with precious metal substrates. The results of cyclic voltammetric studies at gold electrodes where menisci have been deliberately formed, show that the voltammetric response is modified by the presence of the meniscus. Previous data obtained at improperly shielded electrodes Such as wires or flags must be reassessed in the light of the reported resuits.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.251.14.35 Downloaded on 2015-05-29 to IP Vol. 135, No. 4 ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.251.14.35 Downloaded on 2015-05-29 to IP

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Potentiostatic polarization studies in fused carbonates—I. The noble metals, silver and nickel

Cited by 46 publications

References 6 publications

Electrochemical Studies in Molten Li[sub 2]CO[sub 3]-Na[sub 2]CO[sub 3]

Electrochemical Studies in Molten Li[sub 2]CO[sub 3]-Na[sub 2]CO[sub 3]

Carbon electrodeposition in molten salts: electrode reactions and applications

The Formation of Menisci/Films on Gold Electrodes Immersed in Molten Carbonates and Their Effect on Cyclic Voltammetric Measurements

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